XRT83L30 Datasheet, PDF (72/78 Pages) Exar Corporation – SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR

XRT83L30
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ONE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. P1.3.0
PRELIMINARY
FIGURE 26. ITU G.703 PULSE TEMPLATE
269 ns
(244 + 25)
V = 100%
194 ns
(244 – 50)
Nominal pulse
50%
0%
244 ns
219 ns
(244 – 25)
488 ns
(244 + 244)
Note – V corresponds to the nominal peak value.
TABLE 45: TRANSMIT PULSE MASK SPECIFICATION
Test Load Impedance
75Ω Resistive (Coax)
120Ω Resistive (twisted Pair)
Nominal Peak Voltage of a Mark
2.37V
3.0V
Peak voltage of a Space (no Mark)
0 + 0.237V
0 + 0.3V
Nominal Pulse width
244ns
244ns
Ratio of Positive and Negative Pulses Imbalance
0.95 to 1.05
0.95 to 1.05
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